Security Snapshot

Magnera Corp - Common Stock (MAGN) Institutional Ownership

CUSIP: 55939A107

13F Institutional Holders and Ownership History from Q3 2024 to Q1 2026

Latest Period

Q4 2025

Institutions Reporting

185

Shares (Excl. Options)

37,414,547

Price

$15.14

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Type / Class
Equity / Common Stock
Symbol
MAGN on NYSE
Shares outstanding
35,612,980
Price per share
$9.51
All holders as of 31 Dec 2025
Q4 2025
Total 13F shares
37,414,547
Total reported value
$566,459,638
% of total 13F portfolios
0%
Share change
+552,624
Value change
+$17,662,031
Number of holders
185
Price from insider filings
$9.51
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

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Quick Takeaways

  • MAGN - Magnera Corp - Common Stock is tracked under CUSIP 55939A107.
  • 185 institutions reported positions in Q4 2025.
  • 6 significant owners is listed from Schedule 13D/13G reporting.

What Changed

  • Holder count moved from 185 to 6 between Q4 2025 and Q1 2026.
  • Reported value moved from $566,459,638 to $48,444.

Why This Matters

  • You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
  • 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.

Source Evidence

Source: SEC Form 13F

Latest holder context comes from 185 institutions filings for Q4 2025.

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Investment Quick Answers

What is CUSIP 55939A107?
CUSIP 55939A107 identifies MAGN - Magnera Corp - Common Stock in SEC 13F datasets.

Where can I see the latest institutional holders?
Review the Q4 2025 holders report and the ownership history table below.

Significant Owners of Magnera Corp - Common Stock (MAGN) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
Cetus Capital VI, L.P. 7.9% +55% $38,022,023 +$13,387,124 2,803,984 +54% Cetus Capital VI, L.P. 30 Jun 2025
BlackRock, Inc. 7.1% $30,433,104 2,519,401 BlackRock, Inc. 30 Jun 2025
MORGAN STANLEY 6.5% +52% $35,167,101 +$11,691,199 2,322,794 +50% Morgan Stanley 31 Dec 2025
Newtyn Management, LLC 6.4% $30,801,540 2,271,500 Newtyn Management, LLC 30 Jun 2025
Madison Avenue Partners, LP 5% -38% $26,959,026 -$15,921,708 1,780,649 -37% Madison Avenue International LP 31 Dec 2025
Ancora Advisors LLC 1.5% -77% $8,072,058 -$20,442,255 533,161 -72% Ancora Advisors LLC 31 Dec 2025

As of 31 Dec 2025, 185 institutional investors reported holding 37,414,547 shares of Magnera Corp - Common Stock (MAGN). This represents 105% of the company’s total 35,612,980 outstanding shares.

Top 25 Institutional Shareholders

The largest institutional shareholders of Magnera Corp - Common Stock (MAGN) together control 80% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.

Institution Ownership % Shares Held Share Change % Portfolio % Holdings Value
LITTLEJOHN & CO LLC 7.3% 2,593,887 -19% 20% $39,271,449
MORGAN STANLEY 6.8% 2,422,467 +54% 0% $36,676,172
BlackRock, Inc. 6.7% 2,375,925 -4.9% 0% $35,971,505
Newtyn Management, LLC 6.6% 2,360,000 +4.4% 3.8% $35,730,400
Engine Capital Management, LP 6.3% 2,243,827 -17% 4.7% $33,971,541
VANGUARD GROUP INC 6.1% 2,184,219 +1.9% 0% $33,069,077
Madison Avenue Partners, LP 5% 1,780,649 -37% 1.2% $26,959,026
Diameter Capital Partners LP 3.4% 1,205,793 +162% 1.9% $18,255,706
Jefferies Financial Group Inc. 2.8% 994,619 0.12% $15,058,532
Nuveen, LLC 2.3% 823,177 +970% 0% $12,462,900
CANYON CAPITAL ADVISORS LLC 2.3% 810,000 0% 1.6% $12,263,400
D. E. Shaw & Co., Inc. 2.3% 805,693 +211% 0.01% $12,198,192
GOLDMAN SACHS GROUP INC 2.2% 788,936 -6.1% 0% $11,944,491
JACOBS LEVY EQUITY MANAGEMENT, INC 2.2% 786,083 +427% 0.05% $11,901,297
GEODE CAPITAL MANAGEMENT, LLC 2.1% 745,967 -1.3% 0% $11,296,297
Assenagon Asset Management S.A. 2.1% 742,425 -1.5% 0.02% $11,240,315
Clearline Capital LP 1.9% 660,605 +272% 0.75% $10,001,560
STATE STREET CORP 1.8% 640,991 -0.41% 0% $9,704,604
SG Americas Securities, LLC 1.6% 557,810 0.01% $8,445,000
CITADEL ADVISORS LLC 1.5% 550,392 +16% 0.01% $8,332,935
J. Goldman & Co LP 1.5% 538,220 +23% 0.32% $8,148,651
AMERIPRISE FINANCIAL INC 1.5% 519,946 +21% 0% $7,871,982
MILLENNIUM MANAGEMENT LLC 1.5% 518,044 +148% 0.01% $7,843,186
JB CAPITAL PARTNERS LP 1.4% 515,000 +203% 1.3% $7,797,100
Ancora Advisors LLC 1.2% 425,514 -76% 0.13% $6,442,282

Institutional Holders of Magnera Corp - Common Stock (MAGN) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2026 Q1 5,094 $48,444 +$3,966 $9.51 6
2025 Q4 37,414,547 $566,459,638 +$17,662,031 $15.14 185
2025 Q3 36,750,467 $430,715,387 -$35,491,046 $11.72 173
2025 Q2 39,691,539 $479,478,188 +$30,588,844 $12.08 182
2025 Q1 35,171,630 $638,750,519 +$3,666,137 $18.16 210
2024 Q4 34,978,922 $635,557,524 +$627,755,115 $18.17 227
2024 Q3 142,295 $725,642 +$725,642 $9.50 4

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